picolibc: Disable exceptions for picolibc libstdc++ #873
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Picolibc is targeted for smaller embedded systems. It brings improvement over newlib-nano in case of pure C applications. However when used with C++ applications all gains from smaller size of libc are wasted by exception handling support in libstdc++. This change disables exception support in picolibc libstdc++. It results in decreased flash usage - ~9.5kB for ARM target. Signed-off-by: Adrian Gielniewski <adrian.gielniewski@nordicsemi.no>
maciejbaczmanski approved these changes Feb 27, 2025
Contributor
| Should this wait until we figure out a plan to support libstdc++ as a module so that apps needing exceptions can use that instead? |
Author
Sure, makes sense. |
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Picolibc is targeted for smaller embedded systems. It brings improvement over newlib-nano in case of pure C applications. However when used with C++ applications all gains from smaller size of libc are wasted by exception handling support in libstdc++.
This change disables exception support in picolibc libstdc++. It results in decreased flash usage - ~9.5kB for ARM target.
crosstool-ng PR: zephyrproject-rtos/crosstool-ng#33
Fixes #860